Daily Water Intake Calculator
Find out how much water you actually need each day — not a generic 8 glasses, but a target based on your body weight, daily exercise and climate. See the result in litres and in 250 ml glasses so it is easy to track.
How to use
1
Enter your body weight
Type your weight in kilograms or pounds.
2
Add daily exercise
Enter how many minutes you exercise per day.
3
Select your climate
Choose temperate or hot/humid.
4
Read your daily water target
See how much water you need in litres and in 250 ml glasses.
Features
Weight-based calculation
Uses 30–35 ml per kg of body weight as the baseline.
Exercise adjustment
Adds 500 ml for every 30 minutes of moderate exercise.
Climate adjustment
Increases the target for hot or humid conditions.
Glasses conversion
See your daily target in 250 ml glasses for easy tracking.
Common use cases
- Find out how much water to drink daily
- Adjust hydration for exercise or hot weather
- Track daily water intake against a target
- Understand hydration needs for health